From aaaecdbf193964c7e378feadef04b207bfe30b71 Mon Sep 17 00:00:00 2001
From: Jiaxun Yang <jiaxun.yang@flygoat.com>
Date: Thu, 11 Aug 2022 14:45:27 +0100
Subject: [PATCH 1/2] Allow CC to contain space

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 Makefile.prebuild | 8 ++++----
 c_check           | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/Makefile.prebuild b/Makefile.prebuild
index c59e9049c..5dd7dfa4e 100644
--- a/Makefile.prebuild
+++ b/Makefile.prebuild
@@ -60,9 +60,9 @@ all: getarch_2nd
 	./getarch_2nd  1 >> $(TARGET_CONF)
 
 $(TARGET_CONF): c_check$(SCRIPTSUFFIX) f_check$(SCRIPTSUFFIX) getarch
-	./c_check$(SCRIPTSUFFIX) $(TARGET_MAKE) $(TARGET_CONF) $(CC) $(TARGET_FLAGS) $(CFLAGS)
+	./c_check$(SCRIPTSUFFIX) $(TARGET_MAKE) $(TARGET_CONF) "$(CC)" "$(TARGET_FLAGS) $(CFLAGS)"
 ifneq ($(ONLY_CBLAS), 1)
-	./f_check$(SCRIPTSUFFIX) $(TARGET_MAKE) $(TARGET_CONF) $(FC) $(TARGET_FLAGS)
+	./f_check$(SCRIPTSUFFIX) $(TARGET_MAKE) $(TARGET_CONF) "$(FC)" "$(TARGET_FLAGS)"
 else
 #When we only build CBLAS, we set NOFORTRAN=2
 	echo "NOFORTRAN=2" >> $(TARGET_MAKE)
@@ -77,8 +77,8 @@ endif
 
 
 getarch : getarch.c cpuid.S dummy $(CPUIDEMU)
-	avx512=$$(./c_check$(SCRIPTSUFFIX) - - $(CC) $(TARGET_FLAGS) $(CFLAGS) | grep NO_AVX512); \
-	rv64gv=$$(./c_check$(SCRIPTSUFFIX) - - $(CC) $(TARGET_FLAGS) $(CFLAGS) | grep NO_RV64GV); \
+	avx512=$$(./c_check$(SCRIPTSUFFIX) - - "$(CC)" "$(TARGET_FLAGS) $(CFLAGS)" | grep NO_AVX512); \
+	rv64gv=$$(./c_check$(SCRIPTSUFFIX) - - "$(CC)" "$(TARGET_FLAGS) $(CFLAGS)" | grep NO_RV64GV); \
 	$(HOSTCC) $(HOST_CFLAGS) $(EXFLAGS) $${avx512:+-D$${avx512}} $${rv64gv:+-D$${rv64gv}} -o $(@F) getarch.c cpuid.S $(CPUIDEMU)
 
 getarch_2nd : getarch_2nd.c $(TARGET_CONF) dummy
diff --git a/c_check b/c_check
index 01d4f4a7c..d2bd47524 100755
--- a/c_check
+++ b/c_check
@@ -31,8 +31,8 @@ flags="$*"
 
 cross_suffix=""
 
-if [ "`dirname $compiler_name`" != '.' ]; then
-    cross_suffix="$cross_suffix`dirname $compiler_name`/"
+if [ "`dirname \"$compiler_name\"`" != '.' ]; then
+    cross_suffix="$cross_suffix`dirname \"$compiler_name\"`/"
 fi
 
 bn=`basename $compiler_name`

From 1569a43f7e610fca5d551793e5c06fe5b81aee62 Mon Sep 17 00:00:00 2001
From: Jiaxun Yang <jiaxun.yang@flygoat.com>
Date: Mon, 8 Aug 2022 20:14:05 +0100
Subject: [PATCH 2/2] GitHub Actions: Add cross compile tests

Add cross compile tests without running checks. Currently
only mips64el, riscv64, mipsel, alpha is wired up.
Just help us make sure those less popular CPUs are not
messed up by changes.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 .github/workflows/dynamic_arch.yml | 50 ++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/.github/workflows/dynamic_arch.yml b/.github/workflows/dynamic_arch.yml
index 153c63045..c34b0c462 100644
--- a/.github/workflows/dynamic_arch.yml
+++ b/.github/workflows/dynamic_arch.yml
@@ -257,3 +257,53 @@ jobs:
       - name: Run tests
         timeout-minutes: 60
         run: cd build && ctest
+
+  cross_build:
+    runs-on: ubuntu-22.04
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: mips64el
+            triple: mips64el-linux-gnuabi64
+            opts: DYNAMIC_ARCH=1
+          - target: riscv64
+            triple: riscv64-linux-gnu
+            opts: TARGET=RISCV64_GENERIC
+          - target: mipsel
+            triple: mipsel-linux-gnu
+            opts: TARGET=MIPS1004K
+          - target: alpha
+            triple: alpha-linux-gnu
+            opts: TARGET=EV4
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Install Dependencies
+        run: |
+          sudo apt-get install -y ccache gcc-${{ matrix.triple }} gfortran-${{ matrix.triple }} libgomp1-${{ matrix.target }}-cross
+
+      - name: Compilation cache
+        uses: actions/cache@v3
+        with:
+          path: ~/.ccache
+          key: ccache-${{ runner.os }}-${{ matrix.target }}-${{ github.ref }}-${{ github.sha }}
+          restore-keys: |
+            ccache-${{ runner.os }}-${{ matrix.target }}-${{ github.ref }}
+            ccache-${{ runner.os }}-${{ matrix.target }}
+
+      - name: Configure ccache
+        run: |
+          # Limit the maximum size and switch on compression to avoid exceeding the total disk or cache quota (5 GB).
+          test -d ~/.ccache || mkdir -p ~/.ccache
+          echo "max_size = 300M" > ~/.ccache/ccache.conf
+          echo "compression = true" >> ~/.ccache/ccache.conf
+          ccache -s
+
+
+      - name: Build OpenBLAS
+        run: |
+          make -j$(nproc) HOSTCC="ccache gcc" CC="ccache ${{ matrix.triple }}-gcc" FC="ccache ${{ matrix.triple }}-gfortran" ARCH=${{ matrix.target }} ${{ matrix.opts }}